POWER CONTROL FOR WIRELESS COMMUNICATION SYSTEM UTILIZING ORTHOGONAL MULTIPLEXING

摘要

PROBLEM TO BE SOLVED: To adjust transmission power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations.

SOLUTION: The amount of inter-sector interference caused by a terminal is roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmission power level. The transmission power is decreased if high interference is observed by a neighbor base station and increased otherwise. The transmission power is adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmission power level is higher. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs.

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